Title :
Trans-ionospheric distorsion in satellite VHF-band SAR systems
Author :
Ulander, Lars M H ; Frölind, Per-Olov ; Gustavsson, Anders ; Hellsten, Hans ; Herberthson, Magnus ; Jonsson, Tommy ; Larsson, Björn ; Stenström, Gunnar
Author_Institution :
Swedish Defence Res. Establ., Linkoping, Sweden
Abstract :
VHF SAR imagery has proven to be a powerful tool in several civilian and military applications. For a spaceborne instrument the ionospheric effects become significant. The impact of the VHF signal distortion on the SAR image formation process is an open question. The CARABAS-II radar system was configured on ground to collect VHF data at some of the occasions when the space shuttle was passing by during the SRTM experiment. The registrations at 84 MHz using a dual-polarisation antenna array are now in the phase of evaluation, with the objective to detect the target and examine the stability for a trans-ionospheric signal path
Keywords :
VHF radio propagation; geophysical techniques; ionospheric electromagnetic wave propagation; remote sensing by radar; spaceborne radar; synthetic aperture radar; terrain mapping; 84 MHz; CARABAS-II; SAR; SAR imagery; VHF; dual-polarisation antenna array; geophysical measurement technique; image formation; ionosphere; ionospheric effect; land surface; radar remote sensing; radiowave propagation; signal distortion; spaceborne radar; synthetic aperture radar; terrain mapping; trans-ionospheric distorsion; transionospheric propagation; Antenna arrays; Distortion; Instruments; Military satellites; Phased arrays; Radar antennas; Radar imaging; Signal processing; Space shuttles; Spaceborne radar;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2000. Proceedings. IGARSS 2000. IEEE 2000 International
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-6359-0
DOI :
10.1109/IGARSS.2000.858059
